Fert hopper transfer pipe

[ORRA LOON]

We have recently bought a used Amazone ph combi with front fert hopper, the pipe that goes along side the tractor is Aluminium and has worn through in places. The pipe is 5” diameter but the pipe when it leaves the fan is 4” and drops back down to 4” at the rear for the distribution head. What is the point of going up to 5” only to go back down to 4” again? If I replace the 5” with 4” along the tractor will this make any difference?

 

[Gwj]

is it an Avant combi?

There was a 5inch pipe available up to the distribution head that would be made to fit with some machining to the plate. Been a while since I’ve done anything with them but someone from Amazone would be able to advise.

 

[3350turbo]

We have recently bought a used Amazone ph combi with front fert hopper, the pipe that goes along side the tractor is Aluminium and has worn through in places. The pipe is 5” diameter but the pipe when it leaves the fan is 4” and drops back down to 4” at the rear for the distribution head. What is the point of going up to 5” only to go back down to 4” again? If I replace the 5” with 4” along the tractor will this make any difference?

Guy i no has 4m amazone .front tank grain and fert . To coulter bar he replaced his worn side pipes with 110mm pipes as he said it comes out 110mm and goes to 110mm. said it blows back better

 

[KennyO]

@ORRA LOON have used an old irrigation pipe that has one end run over.
Mine has a 4" off the venture. 5" flexi at both ends but back to 4" stack pipe.

It was made by me so probably not right. I think the theory with bigger pipe is less surface resistancefor the area (it is when pumping water anyway)

 

[ORRA LOON]

@ORRA LOON have used an old irrigation pipe that has one end run over.
Mine has a 4" off the venture. 5" flexi at both ends but back to 4" stack pipe.

It was made by me so probably not right. I think the theory with bigger pipe is less surface resistancefor the area (it is when pumping water anyway)

All the 5” irrigation pipes have gone to Chatteris but there’s still 4” left , that’s why I’m asking if I can use 4.

 

[KennyO]

All the 5” irrigation pipes have gone to Chatteris but there’s still 4” left , that’s why I’m asking if I can use 4.

My old df2 just used 4" plastic Soil pipe. It worked fine. Just give it a try.

 

[Hesstondriver]

All the 5” irrigation pipes have gone to Chatteris but there’s still 4” left , that’s why I’m asking if I can use 4.

My old df2 just used 4" plastic Soil pipe. It worked fine. Just give it a try.

I’m pretty sure the accord front boxes on the bedformers at Chatteris used brown 4” soil pipe . But that’s for much lower rate as it is (was) shelter barley

 

[KennyO]

I’m pretty sure the accord front boxes on the bedformers at Chatteris used brown 4” soil pipe . But that’s for much lower rate as it is (was) shelter barley

There was in the past plenty folk using df2 setups up here putting 350-400 kg in very down the spout. However that was when the tractors pulling them were smaller so speed was probably only 5-8 k.
It's high rates at high speed that are the problem.
@Chae1 what rate of fert can you get through your Amazon?
@ORRA LOON what rate will you be wanting to put on and what speed?

 

[Chae1]

There was in the past plenty folk using df2 setups up here putting 350-400 kg in very down the spout. However that was when the tractors pulling them were smaller so speed was probably only 5-8 k.
It's high rates at high speed that are the problem.
@Chae1 what rate of fert can you get through your Amazon?
@ORRA LOON what rate will you be wanting to put on and what speed?

I don't go above 375kg/ha. Anything that needs more I just split application and put 2nd dose on with fert spreader.

 

[cosmagedon]

When I made my front hopper I did a bit of reading and asking around about pipework size, obviously bigger is better for higher rate or with a wider machine but the main thing I did learn was not to go down in size after the Venturi. If the pipe goes smaller it slows the air behind and this can cause the seed/fert to stall.

If it starts at 4" run that size all the way too the distribution head